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L-Lysine Works Against Cold Sores

Many people report that the amino acid supplement l-lysine seems helpful in preventing or healing cold sores.
L-Lysine Works Against Cold Sores

Q. More than 20 years ago I came across an article promoting l-lysine as a preventive measure against cold sore outbreaks. Having suffered with this virus since adolescence, I was motivated to try the supplement.

In my experience, l-lysine is a miracle drug. I used to have at least one outbreak a month, but I now only feel the initial “tingle” of a cold sore if I have overindulged in caffeine, been under an abnormal amount of stress or spent too much time in the sun. I take 1000 mg a day, every day. If I feel an outbreak coming, I triple the dose for a couple of days and the outbreak is prevented.

A. Many people report, like you, that l-lysine seems helpful in preventing or healing cold sores. Double-blind studies on l-lysine for cold sores have produced mixed results. There has been surprisingly little research in recent years, however. This amino acid appears relatively safe although some people report digestive upset.

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Aug 8, 2019 redirected to: https://www.peoplespharmacy.com/articles/can-l-lysine-prevent-painful-cold-sores/

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.” .
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